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Finding the Third Proportional to 1,989.56 and 3,046.36

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Solution

The third proportional to 1,989.56 and 3,046.36 is: 4,664.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.56 : 3,046.36 = 3,046.36 : x
  2. Step 2: Convert to fraction form
    1,989.56/3,046.36 = 3,046.36/x
  3. Step 3: Cross multiply
    1,989.56x = 3,046.36 × 3,046.36
  4. Step 4: Simplify right side
    1,989.56x = 9,280,305.44
  5. Step 5: Solve for x
    x = 9,280,305.44/1,989.56
  6. Step 6: Final answer
    x = 4,664.50

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.